I have put the link to the website Big Tree Books which sells many genealogy books, and this will take you directly to the site for the purchase of "In Full Force and Virtue". There are many entries in it for the Nixon families and you might very well find many of your ancestors in it. Here are a couple of the shorter entries:
Chapter 18:Pasquotank County Records
Test Will: T. Muse Clk
The Petition of Jame sNixon to the Respected Cort now Seting at Nixonton for September Term 1797 Respectfully Sheweth-

Whereas Your Petitioner under a Sence of Gratitude for the many Servises rendered, by a Certain Negroe Man by Name David aged near Sixty years formerly the Protery of Thos. Pritchard Decd. Which by Division of Sd Estate fell to me, and knowing the Intention of his former Master, to whom I was near by allyed by Marriage to his only Daughter where by my Mind being imprest with Tenderness towards the Sd Negro David with Desires that he might injoy his freedom the remainder part of his days, he being under his former Master found to be trusty, honest & careful of Sd Masters Intrest for which Merrit, he placed grate Confidence in him in a distinguishing manner Therefore it is the Ernist desire and request of Your Humble Petitioner that the Respected Cort now Siting might in there Clemmency grant that the Sd. Negro David might be free under the restrictions that other free Negros injoy in the state, which is the Sincere Desire and request of Your Humble petitioner.

James Nixon

We the subscribers being a long time acquainted with the above Sd Negro man David, and never knew to our knoledg or ever heard but that the Sd Negro bore a good Carrector, he being of peacable, Quiet, and Orderly disposition therefore we the Sd Subscribers Joine with above Petitioner-
Thomas Pritchard Jno. Smithson junior
Halld Lockwood Danl. Shinley
Abram Jordan Thos Wilson
Robt B Jordan Thos Reding
John Pritchard [?] Morris Senr
John Price [?] Palin

Benja Bailey

Archd Davis

Lemuel Jennings

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James Nixons Peto.
For Negro James
Granted March Term 1800
Will: T. Muse Clk

To the Respected Cort now setting for March Term 1800
The Petition of James Nixon Respectfully Sheweth, that my Negro Man James whome I Perchased som time past- By his Industry hath replaced the Perchase Money Therefore your humle Petitioner request that You in your Clemency will Grant that the Sd. Negro James may be free by Name James Robinson as other free People of Collar in this State- & Your Petitioner in Duty Bound Shall ever Pray &c.

Jas. Nixon

We the Subscribers Being Acquainted with the Sd. Negro James for a Considerable time & believe him to be peaceable Quiet and Industerus Person & that we never heard any thing to the Contrary

Jacob Jackson
W ro by
Nathan Morris John Price
John Bell Cr. Nicholson

A Morris Junior

Benjamin Symons

Bailey Davis

Thos. Ackess

J Lane

Thos. [Faded]

Wm Lane
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Bond - James Nixon & als
December Term 1805

The Within Bond not having been Signed at the last Term and it Appearing to the Court that Jas.Nixon is since dead it is Ordered that the Sd. Emancipation be Confirmed on the within Negro Isaac's giving Bond with Miles Jackson 7 Thos. Cartwright as Securities

Test
Will: T. Muse Clk
March 6, 1806

State of North Carolina Pasquotank County, December Term 1805

Know all men by these presents that we Miles Jackson and Thomas Cartwright of the County aforesaid are held and firmly bound unto John Smithson Esquire Chairman of the County Cort of Pleas and Quarter Sessions, for the County aforesaid or to his Successors in Office, in the sum of One hundred pounds to which payment well and truly to be made and done, we bind ourselves our heirs Executors and Administrators, Jointly and severally firmly by these presents, Sealed with our Seals and Dated the 5th day of December 1805.
The Condition of the above Obligation is such that Whereas james Nixon by his Petition has liberated and set free from Slavery a negro Man Named Isaac- Now if the above bounden Miles Jackson & Thos Cartwright their heirs Exors or Admors or any of them do and shall from time to time and at all times hereafter Acquit discharge and Save harmless the overseers of the Poor and Inhabitants of the County aforesaid from all other suits Charges and Demands whatsoever touching and Concerning the Same, then the above Obligation to be Void, otherwise to remain in full force and Virtue
Sealed and Delivered in the presence of
Will: T. Muse Clk

Miles Jackson
Thos Cartwright